Computed column
To specify the example computed column 
((WAGES.SALARY - WAGES.TAXES) * 12) + WAGES.BONUS
do the following: 
1.	In the Left operand field, select WAGES.SALARY from the list. 
2.	In the Operator field, select - from the list. 
3.	In the Right operand field, select WAGES.TAXES from the list. 
4.	Select Add to operand lists. 
5.	In the Left operand field, select (WAGES.SALARY - WAGES.TAXES) from the list. 
6.	In the Operator field, select * from the list. 
7.	In the Right operand field, type 12. 
8.	Select Add to operand lists. 
9.	In the Left operand field, select ((WAGES.SALARY - WAGES.TAXES) * 12) from the list. 
10.	In the Operator field, select + from the list. 
11.	In the Right operand field, select WAGES.BONUS from the list. 
Last modified date: 01/29/2015